The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 13, 2003
Filed:
Jun. 02, 2000
Applicant:
Inventors:
Tsutomu Shikada, Fukuyama, JP;
Takashi Ogawa, Yokohama, JP;
Masatsugu Mizuguchi, Kunitachi, JP;
Masami Ono, Yokohama, JP;
Assignee:
NKK Corporation, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01J 2/390 ; B01J 8/00 ; B01J 3/502 ; C07C 2/700 ; C07C 2/706 ;
U.S. Cl.
CPC ...
B01J 2/390 ; B01J 8/00 ; B01J 3/502 ; C07C 2/700 ; C07C 2/706 ;
Abstract
An apparatus for producing dimethyl ether comprising: a slurry-bed reactor filled with a dimethyl ether synthesis catalyst and a medium oil therefor; a condenser for condensing a gasified medium oil discharged from the reactor; an adsorber for removing a catalyst-deactivation ingredient from the medium oil condensed in the condenser; and recycle means for recycling the medium oil to the slurry-bed reactor.